40% is the change from 505 to 707
Calculation steps:
[( 707 - 505 ) ÷ 505] x 100 = 40%
Formula
Percentage change = [(707 - 505) / 505] x 100
Subtract the new number by the original number
707 - 505 = 202
202 ÷ 505 = 0.4
0.4 x 100 = 40%
Example